import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;


public class Utils {
    public static void main(String[] args) throws Exception {
        List<Map<String , Object>> data = JdbcUtil.query("select * from user");
        int data_l = data.size();

        User user = new User(24, null, "123456", null, null);
//        List<User> us = new ArrayList<>();
//        for (int i = 0; i < 10; i++) {
//            us.add(user);
//        }

//        JdbcUtil.update(user);

        List<Map<String, Object>> res = JdbcUtil.execSql("select * from word");
        int a = 0;
    }
}
